Adds support for email verification_method in ConnectionOptions

Author: kailash-b

src/Auth0.ManagementApi/Models/Connections/ConnectionOptionsEmailAttribute.cs

@@ -1,4 +1,7 @@
+using System.Runtime.Serialization;
+
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace Auth0.ManagementApi.Models.Connections
 {
@@ -12,5 +15,30 @@ public class ConnectionOptionsEmailAttribute : ConnectionOptionsAttributeBase
         /// </summary>
         [JsonProperty("signup")]
         public ConnectionOptionsEmailSignup Signup { get; set; }
+        
+        /// <summary>
+        /// Gets or sets the verification method for email.
+        /// </summary>
+        [JsonConverter(typeof(StringEnumConverter))]
+        [JsonProperty("verification_method")]
+        public ConnectionOptionsEmailVerificationMethod? VerificationMethod { get; set; }
+    }
+
+    /// <summary>
+    /// Verification methods for email authentication
+    /// </summary>
+    public enum ConnectionOptionsEmailVerificationMethod
+    {
+        /// <summary>
+        /// Use magic link for verification
+        /// </summary>
+        [EnumMember(Value = "link")]
+        Link,
+
+        /// <summary>
+        /// Use one-time password for verification
+        /// </summary>
+        [EnumMember(Value = "otp")]
+        Otp
     }
 }

tests/Auth0.ManagementApi.IntegrationTests/ConnectionTests.cs

@@ -11,7 +11,6 @@
 using System.Collections.Generic;
 using Auth0.AuthenticationApi.Models;
 using Auth0.ManagementApi.Models.Connections;
-using Auth0.Tests.Shared;
 using Newtonsoft.Json;
 
 namespace Auth0.ManagementApi.IntegrationTests
@@ -506,7 +505,8 @@ private ConnectionOptions GetConnectionOptionsRequest()
                             {
                                 Active = false
                             }
-                        }
+                        },
+                        VerificationMethod = ConnectionOptionsEmailVerificationMethod.Otp
                     },
                     PhoneNumber = new ConnectionOptionsPhoneNumberAttribute()
                     {